Air Force Installation Cost Gap
Unlike the raw BAH comparison, this tool applies a cost-of-living factor to the delta so you see the real purchasing power gap between two Air Force installations.
Complete required fields, then select Calculate.
Estimate confidence: PENDING INPUT
Data as of 2026-01-01
Included in estimate
- Base pay (paygrade + years of service)
- BAS
- BAH (ZIP + dependent status)
- Special pay entered in this scenario
- Cost-of-living factor used by this tool
- Deduction rate assumption shown in this tool
Not included
- Service-specific incentive pays not entered (for example sea pay or flight pay)
- Future pay-table or allowance updates after the data date
- Personal tax credits/deductions beyond the selected deduction assumption
What this tool is for
Use when a raw BAH comparison between two Air Force ZIPs understates the real economic difference. The cost factor accounts for installation-specific cost differences that BAH alone does not capture.
Worked example
Example: comparing Langley AFB vs Peterson SFB at E-7 with dependents shows not just the BAH difference but the adjusted purchasing power gap after the cost factor.
When to use it
Use it when assignment planning hinges on real economic difference, not just the housing allowance number.
When not to use it
Do not use it as a cost-of-living guarantee. The site cost factor is an editorial assumption, not a DoD-published rate.
What the result means
The cost-adjusted gap is a planning proxy. The cost factor is disclosed as a site assumption. Verify local costs independently.
Official sources used
Direct links to the official pages this tool relies on.
Site assumptions
- The cost-of-living adjustment factor is a site editorial estimate. It is not a DoD-published rate.
- BAH is the DoD-published rate for each ZIP at the entered paygrade and dependent status.
What is included
- BAH for both ZIPs at the entered paygrade and dependent status
- Base pay and BAS at the entered paygrade and years of service
- Cost-of-living factor applied to the delta
What is not included
- COLA (OCONUS)
- Actual local housing market prices
- State income tax differences between installations
Verify with
- DTMO BAH lookup for each ZIP
- The gaining installation housing office
- Local housing market research
Frequently asked questions
Is this an official government site?
No. This is an independent planning utility, not an official U.S. Government website. Do not submit CUI, ITAR, classified, or sensitive personal information. Always verify estimates with official sources before making financial decisions.
How accurate are these estimates?
These are planning estimates based on official DFAS, DoD, and service-specific sources. Actual pay may vary based on your specific situation, special pays, tax withholdings, and other factors. Use these tools for planning purposes and verify with your finance office.
When was this data last updated?
Check the source and assumptions sections on this page for the current effective date used by the site. If the linked official pages have changed since then, use the official pages first.
How do cost factors affect the comparison?
Cost factors adjust the estimated purchasing power of your compensation at each location. A cost factor above 1.0 means higher living costs, while below 1.0 means lower costs compared to the baseline.
This estimate uses simplified planning assumptions. Review the linked methodology and official source pages before making financial decisions. Spotted an error or have a suggestion? Send a note.